The binomial cube is a concrete representation of the algebraic formula (a + b)³. But it is not a material directly teach maths, but first it is rather introduced as a challenging three-dimensional puzzle that teaches children finding patterns and understanding spatial relationships. The cube is made up of a number of colored blocks, which fit together in a specific way. Unlike many Montessori materials, such as the iconic pink tower, the binomial cube does not isolate only one quality. Some blocks have one color, others have two. Some blocks are cubes, while others are rectangular prisms. While the pink tower blocks vary only in size, the binomial cube’s blocks vary in color, size, and shape! This makes the binomial cube a more complex sensorial material, and it requires organized thinking to master.